Power testing device



FIG. 1 is a perspective view of a power testing device showing my new design;

FIG. 2 is a front view of the power testing device;

FIG. 3 is a rear view of the power testing device;

FIG. 4 is a right side view of the power testing device;

FIG. 5 is a left side view of the power testing device;

FIG. 6 is a bottom view of the power testing device; and,

FIG. 7 is a top view of the power testing device. 

The ornamental design for a power testing device, as shown and described. 